5 Best Red Dot For Shadow System CR920

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Welcome to My blog of best red dot for Shadow System CR920.

Let’s talk about the Shadow System CR920, a firearm that I’ve had the privilege of hands-on testing extensively.

As someone who’s been shooting for years, I can confidently say this model is a game-changer. But what about the red dot sights? I’ve tried a variety of them on the CR920 to find the best fit for both novices and experts. 

The goal of this article is to share insights from my comprehensive review of red dot sights specifically designed for the Shadow System CR920.

shadow system CR920 Red DotCategoryPrices
Holosun 507K X2Best Overall$295.99
Holosun 407K X2Best Multi Reticle System$224.99
SIG Romeo Zero EliteGreat Value for Money$169.95
Swampfox SentinelHighly Durable$168.30
Holosun EPS CarryBest Compact Option$429.99

Top 5 Best Shadow System CR920 Red Dot

  1. Holosun 507K X2 – Best Overall
  2. Holosun 407K X2 – Best Multi Reticle System
  3. SIG Romeo Zero Elite – Great Value for Money
  4. Swampfox Sentinel – Highly Durable
  5. Holosun EPS Carry – Best Compact Option

1. Holosun 507K X2 – Best Overall

HOLOSUN HS507K X2 Multi-Reticle Red 2 MOA Dot & 32 MOA Circle Open Reflex Pistol Sight - Durable Shake-Awake Parallax-Free Aluminum Sight for Subcompact Handguns
  • HOLOSUN RED DOT SIGHT - The HS507K X2 is an open reflex...
  • HIGH PERFORMANCE - This red dot sight features...
  • MULTI-RETICLE SYSTEM - This Holosun sight is equipped...
  • SHAKE AWAKE TECHNOLOGY - Extends battery life by...
  • SPECIFICATION - Reticle: Red 2 MOA Dot & 32 MOA Circle;...

The Holosun 507K is a top-notch subcompact red dot sight perfect for the Shadow System CR920.

Sleek Profile: What makes the Holosun 507K a dream for many CR920 users is its sleek profile. The sight aligns perfectly with the slide width of your Shadow System CR920. 

This is especially useful for those who opt for concealed carry. You’re not dealing with any overhang, nothing protruding out from the sides. The aesthetic and functional design make it a perfect companion for the CR920, melding as if they were made for each other.

Improved Durability: Let’s talk about durability. The Holosun 507K can withstand drop impacts like a champ. It’s designed to handle the recoil generated by small 9mm firearms, such as the CR920. 

Whether your CR920 has a slide window cut or not, this sight holds its own. It’s the kind of robustness you want when you’re out in the field.

ShakeAwake Technology: One of the coolest features of the Holosun 507K is the ShakeAwake technology. Basically, when the optic is idle, it shuts down to save battery. 

The moment it senses motion, boom, it’s awake, and you’re good to go. In practical terms, you can forget worrying about conserving battery life when you’re out shooting for an extended period. This feature is just one less thing to think about, which is a huge plus.

Easy Battery Change: Changing batteries is often a huge pain, but not with the Holosun 507K. There’s no need to remove the sight for a battery swap. The side battery access makes it as simple as pie. 

You’ll appreciate this feature when you’re out and about and you realize you need a fresh battery. Trust me, it’s a timesaver.

Built-in Rear Sight: The Holosun 507K comes with a built-in rear sight, which is pretty handy. It offers the benefit of not needing a separate rear sight, saving space, and keeping the setup clean. The sight lines up perfectly, ensuring accurate shots every time.

Why I Love It: I absolutely love the Holosun 507K because it’s the perfect balance of form and function. Its sleek profile makes it ideal for the Shadow System CR920, while the ShakeAwake technology and side battery access simplify life in a big way. 

It’s like the designers thought of everything. I’ve had zero issues with it, and it has significantly improved my shooting experience.

My Experience 

Having used the Holosun 507K on my CR920, I can vouch for its reliability and performance.


  • The sleek design aligns perfectly with CR920
  • Durable and robust
  • Innovative ShakeAwake technology
  • Easy battery change
  • Fast reticle acquisition
  • Built-in rear sight


  • Open emitter can attract debris easily

2. Holosun 407K X2 – Best Multi Reticle System

HOLOSUN HS407K-X2 Classic Reflex Red Dot Only Sight
  • HOLOSUN RED DOT SIGHT - The HS407K X2 is an open reflex...
  • HIGH PERFORMANCE - This reflex sight for handgun...
  • SHAKE AWAKE TECHNOLOGY - Extends battery life by...
  • MULTILAYER REFLECTIVE GLASS - This red dot sight is...
  • SPECIFICATION - Reticle: 6 MOA Dot; Light Wavelength:...

The Holosun 407k reflex sight is a high-performance optic tailored for the Shadow System CR920, featuring Lock Mode, Shake Awake Technology, and a multilayer reflective glass.

Lock Mode: The Lock Mode is a smart feature that comes in super handy when you’re in the thick of it. It essentially locks the buttons to prevent any accidental changes to your settings. Made of sturdy 7075 Aluminum, the housing is designed to endure high stress and impact. 

I can’t tell you how many times Lock Mode has saved me from making unintended adjustments while aiming. It’s like a safety net that keeps you on track.

Shake Awake Technology: This isn’t your ordinary battery-saving feature. The Shake Awake Technology deactivates the optic’s LED when it’s not in use, and you can set the downtime from 10 minutes to 12 hours. Just a slight touch or movement, and it’s instantly back on. 

This means your sight is always ready to go when you are, without wasting battery life. It’s like having a copilot that knows exactly when to step in and when to step back.

Multilayer Reflective Glass: The optical-quality glass lenses have multilayer coatings, ensuring maximum light transmission while minimizing glare. What’s special about Holosun’s coating is its ability to produce an incredibly intense, clear reticle with excellent battery efficiency. 

You get crisp, high-contrast images that make target acquisition feel almost like second nature. The fact that it also has a long-lasting effect on the battery life is a big win-win, in my book.

Housing Material and Surface Finish: The sight is made from 7075 T6 Aluminum, providing you with a durable and reliable piece of hardware. 

The anodized surface finish further ensures that your sight can withstand harsh conditions, corrosive elements, and the test of time. It feels sturdy and looks premium.

Adjustment and Range: Each click adjusts the sight by 1.5 MOA, and the windage and elevation travel range is ±30 MOA. This allows you a high level of fine-tuning so you can get your aim just right. It’s user-friendly and can be adapted easily in field conditions.

Why I Love It: The Holosun reflex sight is like the Swiss Army knife of red dot sights. From the Lock Mode to the Shake Awake Technology and the multilayer reflective glass, it’s packed with features that genuinely improve my shooting experience. 

It’s user-friendly, energy-efficient, and incredibly robust, making it an all-around win for any CR920 owner.

My Experience 

This sight has been a real game-changer for me. It’s like it was tailor-made for the CR920. Every feature seems to enhance the gun’s existing capabilities, creating a seamless and efficient shooting experience.

Know The Difference Between Holosun 507k Vs 407K


  • Lock Mode prevents accidental setting changes
  • Shake Awake Technology saves battery life
  • Multilayer reflective glass offers superior clarity
  • Durable housing made of 7075 Aluminum
  • Easy to adjust with a wide range of settings


  • The open emitter can attract debris

3. SIG Romeo Zero Elite – Great Value for Money

SIG SAUER RomeoZero Elite 1x24mm 3 MOA Red Dot Shockproof Open Reflex Handgun Sight Compatible with Springfield Hellcat OSP, Glock G43X MOS & SIG Sauer P365 Optics-Ready Pistols
  • SIG SAUER PISTOL SIGHT - Scratch-resistant glass...
  • DURABLE - Carbon-infused polymer housing with...
  • VISIBLE - All rear surfaces of the housing have...
  • COMPATIBILITY - This SIG SAUER red dot sight is...
  • SPECIFICATION - Magnification: 1x; Objective Lens...

The SIG Romeo Zero Elite is a cost-effective, feature-rich reflex sight that’s perfectly compatible with the Shadow System CR920.

TAP Reticle Activation: The TAP Reticle Activation is incredibly nifty and intuitive. One tap on the lens hood, and you can easily dial the brightness level. 

I found this feature to be a dream for those of us with larger hands. No more fumbling around small buttons! It comes with eight daytime illumination levels, giving you a versatile range for various lighting conditions. 

Stronger Lens: Gone are the days of the polymer lens; the Romeo Zero Elite now has a spectra coat polymer HD lens. The result is a distortion-free field of view that performs admirably under varying conditions. The lens is sharp, clear, and effective. 

This is a noticeable upgrade, and I definitely felt more confident using it on my CR920. The clarity and distortion-free view make a world of difference when you’re out on the range or in the field.

Two Reticle Options: The sight offers two distinct reticle options: a new 32 MOA ring reticle with a 2 MOA dot and the original 3 MOA dot. 

Having the choice between these two means you can customize your targeting to your personal preferences. I tried out both and found that the 32 MOA ring significantly speeds up target acquisition. If you prefer a more classic approach, the 3 MOA dot is still there for you.

MOA Adjustment and Dot Size: The MOA adjustments are at 1 MOA per click, providing fine granularity when you’re zeroing in. The dot size choices of either a 3 MOA dot or a more complex 32 MOA ring with a 2 MOA dot bring added flexibility. 

These features enable you to fine-tune your sight to your specific needs, whether it’s for close-quarters engagements or more precise long-range shots.

Battery and Weight: One downside is the lower battery life, but the top-loading battery door makes swapping out the CR1632 battery simple and quick. 

Its lightweight nature, at just 0.5 oz, means it won’t add unnecessary weight to your rig, allowing for swift and agile movements.

Why I Love It: The SIG Romeo Zero Elite packs an impressive array of features without breaking the bank. I especially love the TAP Reticle Activation; it’s intuitive and makes adjustments a snap. 

Combine that with multiple reticle options and a stronger lens, and you’ve got a sight that’s versatile and user-friendly. It’s like SIG thought of every little detail.

My Experience 

I’ve used it in various scenarios, and have to say, it integrates seamlessly with my CR920. It’s reliable, efficient, and gives me the customization I crave.


  • TAP Reticle Activation is user-friendly
  • Strong lens provides a clear field of view
  • Multiple reticle options for customized targeting
  • Lightweight and compact
  • Top-loading battery door for easy battery replacement


  • Lower battery life compared to other models

4. Swampfox Sentinel – Highly Durable

Swampfox Sentinel Micro Reflex, Auto Brightness, Red Dot
  • IN THE BOX: Optix w/sheath, screwdriver, lens cloth,...
  • AUTO BRIGHTNESS MODEL: A photosensitive sensor on the...
  • COMPACT UNOBSTROCTIVE FIT: Shoehorned into this tiny...
  • DUTY GRADE: Made from 7075 aluminum that is hard coat...
  • DOUBLE THE LIFE: The CR2032 battery effectively doubles...

The Swampfox Sentinel offers high-performance optics in a durable package, making it a stellar value-for-money option for the Shadow System CR920.

7075 T6 Aluminum Body: This sight is built with a 7075 T6 aluminum body, which means it’s designed to be robust and withstand a lot of abuse. This material is incredibly tough, offering excellent resistance against recoil forces as well as the usual bumps and bruises your optic might encounter. 

When using it on the field, the body felt solid and durable, and I was confident that it could handle rigorous use without compromising its structural integrity. The hard coat oxidation adds another layer of resilience.

Low Profile Lens Hood: The low-profile lens hood design allows for aim with both eyes open and provides a clear view of targets. This design choice helps in reducing the overall profile of the sight, making it less obtrusive while aiming. 

Compact Size: Despite its robust features, the Swampfox Sentinel remains compact with a 16mm x 16mm sight window. This size is large enough for quick target acquisition and sight tracking but remains small enough not to interfere with concealment.

 It’s a balancing act, but Swampfox nailed it. In real-world use, it strikes a perfect balance between size and utility.

Battery Life and Material: One of the standout features is the use of a CR2032 battery, effectively doubling the battery life. This longevity is a game-changer if you plan on carrying your pistol all day, every day. 

The battery compartment is also well designed, ensuring that the battery stays secure even during heavy recoil.

Why I Love It: What’s not to love about the Swampfox Sentinel? It’s rugged, feature-rich, and offers excellent performance for the money. 

My Experience

Having tested the Swampfox Sentinel extensively on my CR920, I can say with confidence that it’s a stellar match. The sight mounts directly to the RMSc slots and felt incredibly stable throughout.


  • Durable 7075 T6 aluminum body
  • Low profile lens hood allows aiming with both eyes open
  • Compact size is perfect for concealed carry


  • No audible turret clicks for adjustments

5. Holosun EPS Carry – Best Compact Option

HOLOSUN EPS Carry Red MRS 2 MOA Dot & 32 MOA Circle Reflex Pistol Sight - Waterproof Shake-Awake Solar Failsafe Enclosed Sight for Subcompact Handgun s- RMSc-to-K Footprint Adapter Plate Included
  • HOLOSUN REFLEX SIGHT - The EPS Carry-RD-MRS is an...
  • HIGH PERFORMANCE - The EPS Carry-RD-MRS handgun sight...
  • MULTI-RETICLE SYSTEM - This Holosun sight is equipped...
  • SOLAR FAILSAFE - If your battery fails, this red dot...
  • SPECIFICATION - Reticle: Red 2MOA Dot & 32MOA Circle;...

The Holosun EPS Carry offers unparalleled durability with its fully enclosed design, making it a reliable micro red dot sight for the Shadow System CR920.

Very Long Battery Life: One of the most striking features is the extensive battery life. We’re talking about 50,000+ hours on a single CR1620 battery. 

Now, that’s a relief for anyone who has faced the annoyance of their sight dying mid-session. Furthermore, the sight has a solar panel backup, which can function as a main power source in bright conditions. 

Solar Power Backup: As mentioned above, the sight also comes with a solar panel backup. But let me dive into why this is a game-changer. Unlike other red dot sights that rely solely on battery power, the Holosun EPS has a solar panel that functions much like a fiber optic under any light exposure. 

Side Loading Battery: One small but meaningful feature is the side-loading battery access. With many red dot sights, you need to remove the entire sight to replace the battery. 

Not so with the Holosun EPS. The design allows for quick and easy battery swaps without removing the sight from your weapon. 

This feature minimizes downtime and helps you maintain your settings, ensuring a consistent shooting experience.

Magnification and Dot Size: The Holosun EPS has a 1x magnification and offers a bright red or green dot with a size of 2 MOA + 32 MOA ring. For those new to MOA, it stands for Minutes of Angle, a unit for angular measurement of the circle. 

With a 2 MOA dot and 32 MOA ring, you get fast target acquisition without sacrificing accuracy, giving you the confidence to take those long-range shots.

Material and Durability: Made from 7075 T6 aluminum, this sight is designed to withstand harsh conditions. The material is known for its high strength-to-weight ratio, making it ideal for applications requiring durability without excess bulk. 

The fully enclosed design also offers added protection against the elements, meaning you can count on this sight in any weather.

Why I Love It: I absolutely love the Holosun EPS for its long battery life and solar backup. But what really gets me is the convenience of the side-loading battery. 

My Experience 

I’ve tested this sight rigorously on my Shadow System CR920, and it’s been nothing short of exceptional. The solar backup came in handy during a day-long shooting session, and the 1x magnification provided a clear view without distortion.


  • Fully enclosed design for maximum durability
  • Extensive battery life with solar backup
  • Side-loading battery for easy swaps
  • Compatible with RMSc footprint


  • The viewing window is relatively small

Final Verdict

After exhaustive testing and evaluation, I’ve come to a definitive conclusion. While each red dot sight on this list brings something special to the table, the Holosun 507K X2 stands out as my top choice for the Shadow System CR920. 

Your personal preferences and needs will, of course, vary, but the insights I’ve shared should help guide you toward the right optic for your own setup.


What red dots fit CR920? 

Various red dot sights like the Holosun 507K X2, Holosun 407K X2, and SIG Romeo Zero Elite are compatible with the Shadow System CR920.

What optics fit shadow systems? 

Optics such as the Holosun series and Swampfox Sentinel are tailored to fit Shadow Systems firearms like the CR920.

Will the Holosun 507K fit the Shadow Systems MR920? 

Yes, the Holosun 507K is fully compatible with the Shadow Systems MR920 model.

Does Shadow Systems use Glock parts? 

Shadow Systems parts are also compatible with the Glock platform, making them a versatile choice for upgrades or custom builds.

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I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

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